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Anand Agricultural University, Anand

Anand Agricultural University (AAU) was established in 2004 at Anand with the support of the Government of Gujarat, Act No.(Guj 5 of 2004) dated April 29, 2004. Caved out of the erstwhile Gujarat Agricultural University (GAU), the dream institution of Sardar Vallabhbhai Patel and Dr. K. M. Munshi, the AAU was set up to provide support to the farming community in three facets namely education, research and extension activities in Agriculture, Horticulture Engineering, product Processing and Home Science. At present there seven Colleges, seventeen Research Centers and six Extension Education Institute working in nine districts of Gujarat namely Ahmedabad, Anand, Dahod, Kheda, Panchmahal, Vadodara, Mahisagar, Botad and Chhotaudepur AAU's activities have expanded to span newer commodity sectors such as soil health card, bio-diesel, medicinal plants apart from the mandatory ones like rice, maize, tobacco, vegetable crops, fruit crops, forage crops, animal breeding, nutrition and dairy products etc. the core of AAU's operating philosophy however, continues to create the partnership between the rural people and committed academic as the basic for sustainable rural development. In pursuing its various programmes AAU's overall mission is to promote sustainable growth and economic independence in rural society. AAU aims to do this through education, research and extension education. Thus, AAU works towards the empowerment of the farmers.

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  • ThesisItemOpen Access
    EFFECT OF SHELTERING AND SPLASHING WATER ON GROWTH AND PHYSIOLOGICAL RESPONSES OF JERSEY X KANKREJ (G2) AND HOLSTEIN FRIESIAN x KANKREJ (G2) HEIFERS DURING INTENSE SUMMER
    (AAU, Anand, 1986) PATEL, K. S.; Dave, A. D.
    An investigation was carried out to assess the effect of sheltering and splashing water on growth, feed and water intake, feed utilization efficiency, physiological responses, and some of the blood and serum constituents of the Jersey x Kankrej (G2) and the Holstein Friesian x Kankrej (G2) heifers during the summer of 1985. Avearge daily body weight gain of the Jersey crosses (505.30 g) was lesser (P<0.01) than that of the Holstein (594.97 g) crosses. Shaltering, period and interaction between breed and sheltering significantly affected their growth rate. The minimum temperature and the morning ambient temperature had positive and significant association with the growth rate of the Jersey crosses only. The afternoon relative humidity as well as vapour pressure had positive and significant association with the growth rate of both the crosses. The morning temperature humidity index had positive and significant correlation with the growth rate in the Jersey crosses only.
  • ThesisItemOpen Access
    STUDIES ON BODY SURFACE AREA AND SKIN CHARACTERISTICS IN RELATION TO HEAT TOLERANCE AND SOME PRODUCTION TRAITS IN KANKREJ X JERSEY AND KANKREJ X HOLSTEIN F1 CROSS-BREDS
    (AAU, Anand, 1984) PATEL, J. M.; Dave, A. D.
    An investigation was undertaken to study the body surface area and skin structural characteristics of Kankrej X Jersey (KJ) and Kankrej X Holstein (KH) F1 cross-bred cattle. KH cross-breds had significantly larger (4.253 ± 0.077 m2) total body surface area than the KJ cross-breds (3.833 ± 0.076 m2). The effect of age on total body surface area was highly significant. KH cross-breds had smaller surface area per unit body weight from 18-24 months of age onward. Multiple regressions with body weight gave the highest R2 values. Equation with body weight alone gave quite R2 value. Equations for field use have been recommended.
  • ThesisItemOpen Access
    EFFECT OF THE SUMMER STRESS ON GROWING CROSS-BRED (KANKREJ X JERSEY) AND KANKREJ CATTLE
    (AAU, Anand, 1979) PATEL, J. P.; Dave, A. D.
    A study was undertaken at the College of Veterinary Science and Animal Husbandry, Anand to study the effect of summer stress on the growing Kankrej x Jersey half-bred castrated males and Kankrej heifers. The treatments wers- (A) Providing shelter ans (B) Keeping the animals completely exposed to summer conditions. Mean maximum, mean minimum and mean ambient temperature in open during the period of study were 101.11°F, 74.53°F and 89.77°F respectively. The treatments significantly affected the respiration and pulse rate per minute of the protected (39.79 and 80.22) and exposed (44.05 and 82.33) cross-bred males. Heat tolerance indices calculated by the methods of Mullick, Benara and Thomasfor the cross-bred males (0.84, 2.22 and 1.60) and Kankrej heifers (0.88, 1.51 and 1.29) showed that the latter were more heat tolerant.
  • ThesisItemOpen Access
    GROWTH PERFORMANCE, FEED EFFICIENCY AND ECONOMICS OF REARING PRE-WEANED LAMBS SUPPLEMENTED WITH NON-CONVENTIONAL CREEP MIXTURES UNDER FEEDLOT SYSTEM
    (AAU, Anand, 1999) Trivedi, Manojkumar Motibhai; Patel, Ashok M.
    A twelve week growth trial was conducted on 24 and 21 suckling lambs in Phase I and Phase n, respectively. In both the phases, the lambs were assigned to three dietary treatments on body weight basis when they were 21 days old. In Phase I, the dietary treatments were comprised of conventional (T1) or non-conventional I (T2) or nonconventional II (T3) creep mixtures plus ad libitum mature pasture grass and limited quantity of green NB21 fodder. In Phase II, the lambs were assigned to conventional (T1) or non-conventional III (T2) or non-conventional IV (T3) creep mixtures plus ad libitum jowar hay and limited quantity of green NB21 fodder. Each treatment group had Marwari, Patanwadi and Merino x Patanwadi lambs in both the phases. The lambs were fed individually the allocated creep mixtures and roughages. The dams of all the lambs in both the phases were fed to meet their energy and protein needs as per ICAR (1985) feeding standard. In Phase I, the non-conventional-I (T2) and non-conventional-II (T3) creep mixtures were comprised of Prosopis juliflora pods 23 and 22 per cent, babul pods chuni 14 and 22 per cent and mango seed kernel 16 and 19 per cent. In addition to these, non-conventional-I creep mixture contained GN cake and rice polish each 17 per cent while in non-conventional-II creep mixture boiled Cassia tora seeds (9%) and com steep liquor (15%) were incorporated. In Phase-ll, the non-conventional-IIl (T2) and non-conventionaHV (T3) creep mixtures comprised of Prosopis juliflora pods 24 and 21 per cent, babul pods chuni 12 and 19 per cent and mango seed kernel 18 and 12 per cent. In addition to these, nonconventional- IV creep mixture contained boiled Cassia tora seeds (9%) and com steep liquor (14%). In non-conventional-III creep mixture, the GN cake (18%) and rice polish (15%) were incorporated. In both the phases, the conventional creep mixture (T1) was formulated using maize (43%), GN cake (15%) and rice polish (29%). In all, five creep mixtures formulated to content, mineral mixture'3 per cent and jaggery solution/ molasses 10 per cent. In Phase I, the average daily dry matter intake of solid feeds during the entire experimental period in terms of g/day, per cent of body weight and g/kg W.75 in conventional (T1), non-conventional I (T2) and non-conventional II (T3) groups were recorded as 230.00 ± 50.23, 2.15 ± 0.28 and 38.67 ± 5.86; 228.44 ± 47.52, 2.16 ± 0.25 and 38.66 ± 5.38 and 226.17 ± 47.02, 2.10 ± 0.23 and 37.73 ± 5.17, respectively. The treatment means did not differ significantly from each other. In Phase II, the respective values for T1, T2 and T3 groups were 253.12 ± 50.69, 2.00 ± 0.26 and 37.55 ± 5.58; 261.76 ± 52.72, 2.16 ± 0.29 and 40.06 ± 6.06 and 254.56 ± 52.49, 2.14 ± 0.29 and 39.48 ± 6.10. The treatment means for dry matter intake expressed as per cent of body weight and g/kg W0.75 did not differ significantly.
  • ThesisItemOpen Access
    FEEDLOT PERFORMANCE OF WEANER LAMBS ON AZOLLA BASED NON-CONVENTIONAL TOTAL MIXED RATION UNDER INTENSIVE PRODUCTION SYSTEM
    (AAU, Anand, 1999) Wadhwani, Kishankumar N.; Patel, Ashok M.
    The growth trial was conducted under feedlot system on twenty one farm born weaner lambs in two phases. The animals were assigned to 3 dietary treatments (T1,T2 and T3) on body weight basis which comprised of conventional (TMR I), non-conventional I (TMR II) and non-conventional II total mixed rations (TMR III) in phase I, the animals were individually fed. In phase II, the lambs were assigned to conventional (TMR I), non-conventional I (TMR IV) and non conventional II total mixed ration (TMR V) and group feeding was followed. Total mixed ration was fed ad lib in order to meet energy and protein requirement of lambs as per ICAR (1985). Each treatment group had Marwari, Patanwadi and Merino x Patanwadi lambs. In phase-I, the TMR I comprised of maize (22 % ) , groundnut cake (15 % ) , rice polish (15 % ) , molasses (10 % ) , mineral mixture (3 %) and urea treated wheat straw (35 %) the non-conventional I (TMR II) and non conventional II (TMR-III) total mixed ration comprised of AzollSy 10 % and 20 %, PJ pods 15 % and 17 % and corn steep liquor 12 % and 15 %, respectively. In addition to these TMR-II contained Rice polish 10 % and GN cake, 5 % to make it isonitrogenous. Both TMR II and TMR III contained same level of molasses, mineral mixture and urea treated wheat straw in TMR I. In phase II, the non conventional T (TMR TV) and non conventional II (TMR V) total mixed rations comprised of Azolla 15 and 25 %, PJ pods 20 and 17 % and corn steep liquor 12 and 15 %, respectively. In addition to these, GN cake to the extent of 5 % was added in TMR IV. The urea treated wheat straw was added at the rate of 35 % in TMR I and TMR IV and 30 % in TMR V. The growth trial lasted for 112 days during which the animals attained live weight acceptable in the local market. In phase I, the average daily dry matter intake during the entire experimental period in terms of g/day, per cent of body weight and g/kg W0.75 in conventional (TMR I), non conventional I (TMR II) and non conventional II (TMR III) groups was recorded as 721.60 ± 75.64, 3.46 ±0.18 and 73.81 ± 4.82, 757.28 ± 35.86, 4.04 ± 0.13 and 84.92 ± 3.26 and 671.63 ± 50.78, 3.80 ± 0.21 and 78.19 ± 4.38, respectively. The treatment means did not differ with each other. In phase II, the respective values for TMR I, TMR IV and TMR V were 642.29 ± 39.82, 3.32 ± 0.08 and 69.48 ± 1.90, 606.14 ± 30.68, 3.46 ± 0.05 and 70.60 ± 1.64 and 598.98 ± 31.14, 3.41 ± 0.07 and 69.78 ± 2.12, respectively. The treatment means were statistically similar. The average daily water intake (ml/day) during the entire experimental period during phase I was 3154.46 ± 327.2, 2735.92 ± 139.54 and 2454.62 ± 161.66 in treatment groups T1, T2 and Ta respectively. In phase II, the corresponding values were 2794.92 ± 254.12, 2662.08 ± 211.10 and 2654.91 ± 233.33 in TMR I, TMR IV and TMR V, respectively. The treatment groups in both the phases showed statistically similar values. In phase I, at the end of experimental feeding, the lambs in T1, T2 and T3 groups attained 25.24 ± 1.96, 23.51 ± 1.36 and 21.07 ± 1.12 kg live body weight, respectively. The body weight in all the treatment group did not differ each other but period effect was significant (P < 0.05). In phase II, the live weight was recorded 24.36 i 1.16, 20.34 ± 1.24 and 20.24 ± 1.49 kg in TMR I, TMR IV and TMR V groups, respectively. The difference between treatment groups was statistically non significant but period as well as period x treatment interaction was significant (P < 0.05). In phase I, the digestibility coefficient in TMR I, TMR II and TMR III respectively for dry matter (59.58 ± 1.72, 51.60 ± 0.52 and 51.98 ± 0.44), organic matter (67.22 ± 1.49, 63.53 ± 2.40 and 63.69 ± 1.42), crude protein (80.50 ± 1.94, 73.82 ± 1.47 and 73.40 ± 1.76), crude fibre (62.27 ± 0.87, 63.18 ± 1.32 and 59.10 ± 1.37), nitrogen free extract (60.37 ± 0.70, 57.48 ± 1.42 and 57.22 ± 1.64) and ether extract (58.82 ± 0.80, 59.69 ± 1.79 and 55.73 ± 1.57) were ascertained. The dry matter and crude protein digestibility of the TMR I differed significantly (P < 0.05) with TMR II and TMR III groups. In phase II, the corresponding values for dry matter (61.76 ± 2.10 , 53.27 ± 0.72 and 52.35 ± 0.99), organic matter (68.37 ± 1.17, 59.66 ± 2.09 and 59.61 ± 2.22), crude protein (79.94 ± 2.12, 78.54 ± 2.04 and 74.56 ± 1.58) crude fibre (61.85 ± 1.01, 63.44 ± 1.98 and 57.66 ± 2.01), nitrogen free extract (62.71 ± 0.77, 57.87 ± 2.26 and 53.08 ± 1.68) and ether extract (60.01 ± 0.71, 58.70 ± 1.37 and 56.20 ± 0.96) was recorded. The digestibility coefficients of dry matter organic matter and nitrogen free extract was significantly (P < 0.06) higher for TMR I than either of TMR IV or TMR V group. In phase I, the nitrogen balance (g/head/day) was 9.98 ± 0.40, 9.66 ± 0.28 and 8.70 ± 0.46 in lambs reared on T1, T2 and Ta rations, respectively. The treatment means did not differ significantly. In phase II, the respective values were 9.81 ± 0.50, 10.06 ± 0.28 and 12.21 ± 0.21 in lambs reared on TMR I, TMR IV and TMR V groups, respectively TMR I and TMR IV did not differ significantly but differ from TMR V. In phase I, the TMR I, TMR II and TMR III provided 13.52 ± 0.42, 11.34 ± 0.36 and 10.62 ± 0.13 per cent DCP and 61.81 ± 0.32, 57.72 ± 1.92 and 55.90 ± 0.55 per cent TDN, respectively. The conventional TMR provided significantly (P < 0.05) higher DCP and TDN than both the non conventional groups which did not differ among themselves. In phase II, the TMR I, TMR IV and TMR V provided 13.32 ± 0.34, 11.48 ± 0.30 and 11.10 ± 0.18 per cent DCP and 61.88 ± 0.23, 58.13 ± 2.11 and 55.48 ± 1.04 per cent TDN. The treatment means showed similar trend as that in phase I. In phase I, the dressing percentage on live weight basis and as the percentage of empty live weight under Ti (50.40 ± 0.83 and 59.63 ± 1.11) T2 (48.51 ± 1.05 and 61.89 ± 1.32) and T3 (48.08 ± 1.20 and 62.33 ± 1.06) group of lambs were calculated. In phase II, the corresponding figures were 47.5 ± 1.07 and 59.38 ± 1.11, 49.34 ± 1.12 and 62.93 ± 1.27 and 47.89 ± 1.03 and 59.96 ± 1.22 in TMR I TMR IV and TMR V groups, respectively. Similar was the trend with respect to primal cuts and edible and non edible organ weight. The feed efficiency in terms of DM, DCP and TDN intake (kg/kg live weight gain) in experimental lambs reared under TMR I, TMR II and TMR III groups was worked out as 8.10 ± 0.98, 1.11 ± 0.09 and 5.09 ± 0.45, 10.90 ± 0.87, 1.14 ± 0.07 and 5.82 ± 0.36 and 13.16 ± 1.1, 1.35 ± 0.13 and 7.13 ± 0.70, respectively. The feed efficiency in terms of DM intake was significantly (P < 0.05) high in conventional group as compared to non conventional groups which did not differ among themselves, but the treatment groups did not differ with respect to DCP and TDN intake per kg live weight gain. In phase IT, the respective values were 7.07 ± 0.97, 0.99 and 4,60, 12.56 ± 1,72 1.25 and 6.34 and 14.96 ± 3.44, 1.28 and 6.44 in TMR I, TMR IV and TMR V, respectively. The feed cost (Rs/animal) during the experiment was worked out as 623.55 ± 64.09, 352.50 ± 22.06 and 256.96 ± 16.42 for TMR I, TMR II and TMR III group, respectively. Both, TMR II and TMR III groups recorded significantly (P < 0.05) lower cost as compared to TMR I group. The total feed cost (pre experimental ± experimental) was worked out as Rs. 863.55 ± 64.09, 592.50 ± 22.06 and 496.96 ± 16.42 for T1 , T2 and T3 treatment groups, respectively. In phase IT, the experimental feed cost (Rs/animal) for TMR T, TMR IV and TMR V group was worked out as 472,82, 261.52 and 246.21 and the total feed cost (pre-experimental ± experimental) was Rs. 712.82, 501,52 and 486.21 per lamb. The trend of feed cost was same as in the phase I. Based on the enquiries from the retailers in the local market, the total realisable receipts (Rs/animal) in phase I were computed as 1292.15 ± 90.04, 1177.00 ± 60.48 and 1059.38 ± 49.32 respectively for TMR I, TMR II and TMR III group. The TMR I recorded significantly (P < 0.05) higher receipt than the other groups. The feed cost per kg dressed weight worked out as Rs. 67.01 ± 0.86, 52.46 ± 1.84 and 51.04 ± 2.03 for TMR I, TMR II and TMR III group, respectively. The TMR II and TMR III groups recorded significantly (P < 0.05) lower feed cost per kg dressed weight when compared to conventional, though they did not differ from each other. In phase II, respective figures for TMR I, TMR IV and TMR V were 1133.89 ± 47.45, 1039.09 ± 57.48 and 1009.42 ± 68.32. The feed cost per kg dressed weight was calculated as 61.60, 49.95 and 48.72 for TMR I, TMR IV and TMR V, respectively. The contribution of experimental feed cost/kg dressed weight in phase I was Rs. 47.64, 31.02 and 28.35 in TMR I, TMR II and TMR III groups respectively. The TMR I group recorded significnalty (P < 0.05) higher contribution as compared to other groups. In phase II, the cost worked out as Rs. 40.86, 26.04 and 24.67 in TMR I, TMR IV and TMR V groups, respectively. The returns as per cent of feed cost in phase I was calculated as 150.12 ± 2.46, 198.59 ± 6.64 and 213.57 ± 9.31 for TMR I, TMR II and TMR III group respectively and the values were significantly (P < 0.05) higher in non conventional groups as compared to TMR I group In phase II, the respective average values were 155.09, 207.18 and 207.60 for TMR I, TMR IV and TMR V group. During 06-18 hours of the day 75.05, 76.42 and 73.93 % of the total was feed consumed by the lambs in TMR I, TMR IV and TMR V groups, respectively.
  • ThesisItemOpen Access
    GROWTH PERFORMANCE, CARCASS CHARACTERISTICS AND ECONOMICS OF REARING OF WEANED LAMBS AND KIDS UNDER FEEDLOT PRODUCTION SYSTEM
    (AAU, Anand, 1994) SAIYED, LIYAKATALI H.; PATEL, ASHOK M.
    The growth trials on twenty four each of weaner lambs and kids were conducted. The animals were assigned to dietary treatments on body, weight basis, under feedlot comprising of conventional (T1) or non-conventional (T2) concentrate mixture, ad lib. dry fodder and a limited quantity of green fodder in order to meet their energy and protein requirements as per ICAR (1985). Each group of goats had Marwari, Zalawadi and Surti kids and that of sheep Marwari, Patanwadi and Merino x Patanwadi lambs. The non-conventional concentrate mixture contained Mango seed Kernel (25%) and Babul pods (23%). The lamb growth trial lasted for 180 days and that for kids 210 days during which the animals attained live weight acceptable in the local market. The average daily dry matter intake during the entire experimental period in terms of g/day, g/kg w0.75 and as percent of body weight in conventional and non-conventional group was recorded to be 532.83±9.94, 72.28±1.69 and 3.83±0.13 and 566.75 ±10.49, 75.02±1.78 and 3.86±0.13 respectively. The corresponding figures in kids were 370.42±8.11, 60.38±1.61 and 3.35±0.12 for conventional and 371.94±8.55, 62.25±1.70 and 3.46±0.13 in nonconventional group. The treatment means did not differ significantly in both the species. The concentrate to roughage ratio under T1 and T2 group of lambs was recorded to be 54.25 : 45.75 and 53.89 : 46.11 and the same for kids was 55.25 : 44.75 and 53.33 : 46.67. The treatment groups did not differ from each other. The water intake of lambs in conventional and nonconventional group was 1.4 ± 0.11 and 1.58 ± 0.12 1/day and the same for the kids of respective groups was 0.807±0.08 and 0.938±0.08 1/day. The water intake (l)/kg dry matter intake under T1 and T2 groups of lambs was 3.12 ± 0.25 and 3.29 ± 0.16, respectively and the corresponding figures for kids were 2.10+0.20 and 2.54±0.21, respectively. These values were statistically similar. At the end of experimental feeding the lambs in T1 and T2 groups attained 19.3310.76 and 19.72±0.80 kg, respectively and the same for kids was recorded to be 16.10 ± 0.60 kg and 15.26 ± 0.63 kg, respectively, which were statistically similar. The average daily gain in lambs of T1 and T2 was 51.94 ± 2.84 and 49.04 ± 2.99 g and for kids of respective groups was 42.16±1.76 and 39.53±1.85 g.
  • ThesisItemOpen Access
    THE EFFECT OF RESTRICTED FEEDING DURING GROWING PERIOD AND STOCKING DENSITY DURING LAYING PERIOD ON THE DEVELOPMENT AND LAYING PERFORMANCE OF FLOOR REARED EGG-TYPE CHICKENS
    (AAU, Anand, 1993) SINGH, K. RASHBEHARI; PATEL, ASHOK M.
    An experiment was carried out in floor-reared Random Bred Control Population (RBCP) strain of White Leghorn to study the effect of restricted feeding (T1, Ad-lib., T2, skip-two-days a week and T3, 75 per cent ad-lib.)during growing period (9-20 weeks of age) and stocking density (2.5, 2.0 and 1.5 ft2 space per bird for S1, S2 and S3 treatments respectively) during 20-72 weeks of laying period and their interaction on the development and laying performance. The average body weight of the birds under different treatment groups at 9 weeks of age was at par. While at 20 weeks of age, ad-lib, skip-two-days and 75 per cent ad-lib, birds weighed 1281.42±6.97, 1174.91±6.19 and 1009.19±5.76 g respectively and they differed significantly to each other. During 9-20 weeks, T1, T2 and T3 birds gained 738.62, 629.64 and 470.14 g respectively. During growing period the average feed consumption of T1, T2 and T3 birds was 65.50±2.23, 57.91±2.51 and 47.05± 2.09 g/bird/day respectively and differed significantly (P<0.01), T1 and T2 birds consumed significantly less feed for each kg body weight gain (6.959 and 7.048 kg respectively) than those by T3 (7.958 kg) birds.
  • ThesisItemOpen Access
    INVESTIGATIONS ON EFFICIENCY OF GROWTH, GONADAL DEVELOPMENT AND SEXUAL BEHAVIOURAL PATTERNS IN RELATION TO ONSET OF PUBERTY IN F1 AND INTER SE MATED JERSEY x KANKREJ MALE CALVES
    (AAU, Anand, 1992) Singh, Laishram Sharat Kumar; Patel, J. M.
    Post-weaning growth performance, efficiency of gain, gonadal development and sequential development of sexual behavioural components were studied under standard feeding and management in 4 Jersey x Kankrej halfbreds (JKF1) and 6 Jersey x Kankrej inter se mated (JK inter se) male calves from 17 weeks through 67 weeks of age at Livestock Research Station, Anand. The factor or traits studied to characterise puberty in these crossbreds included age, body weight, testicular size, histological changes of testes, sexual behaviour, age of complete penile release and age of first semen donation. Certain biochemicals and hormones related to reduction were assessed to ascertain puberty and sexual maturity obtained from the above mentioned events. The histological development of testis was studied in another 40 JK crossbreds by collecting testes at different ages from birth to 16 months.
  • ThesisItemOpen Access
    STUDY ON ACCURACY OF DIFFERENT METHODS OF ESTIMATION OF LACTATION MILK YIELD AND THEIR USEFULNESS TO ESTIMATE BREEDING VALUE OF KANKREJ ANIMALS
    (AAU, Anand, 1986) BHAMBURE, CHANDRAMOHAN VITTHAL; Dave, A. D.
    A study was undertaken on different methods of estimation of lactation milk yield viz., daily peak milk yield, systematic sampling of daily milk yield records and part lactation milk yield records. The objective of the study was t o assess t h e i r accuracy in lactation yield estimation and usefulness in estimating breeding value of Kankrej animals. The data for the study, pertaining to the period from April 1948 to March I968, comprlsed of dally milk yield records of 749 normal lactations (spread over 1 to 10 lactations) of 296 animals, maintained at Sheth M.N.Goenka Goshala, Institute of Agriculture, Anand, presently known as Livestock Research Station, Gujarat Agricultural University, Anand Campus, Anand.