Influence of Cow Weight on Preweaning Performance of White Lamphun Calves
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Abstract
Data of birth weight (18.3 ±2.2 kg.) with 173 records and of preweaning ADG (0.251 ±0.070 kg./day) and weaning weight at 205 days (69.7 ±13.7 kg.) each with 168 estirmates of White Lamphun calves were used in this investigation.
The influence of weight of dam on birth wight, preweaning ADG, and weaning weight were highly significant (P <.01) Calves from heavier cows grew faster and were heavier at birth and weaning than calves from lighter cows. Cow weight change during suckling significantly influenced (P <.05) preweaning ADG and weaning weight. Calves from cows gaining weight grew faster and were heavier at weaning than calves from cows losing weight. Age of dam did not significantly influence the three calf’s traits.
Sex of calf significantly affect birth weight. but did not significantly affect preweaning ADG and weaning weight of calves. Calf’s birth weight did not significantly affect the other two traits studied.
Results from this investigation suggested that White Lamphun cows rearing under limited natural grasses may produce better calves, if their body weight at parturition were high, and gain as much as possible weight during suckling.
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References
สุวัฒน์ รัตนรณชาติ. (2533). ความสำคัญ และลักษณะของปฏิกริยาร่วมระหว่างปีกับฤดูเกิด ที่มีต่อลักษณะน้ำหนักลูกโคขาวลำพูน. วารสารวิจัยและส่งเสริมวิชาการเกษตร. 3: 132.
สมบัติ ศรีจันทร์. (2530). อิทธิพลของพันธุ์โค อายุโค และชนิดอาหารหยาบในการเลี้ยงโคขุน. วิทยานิพนธ์ปริญญาโท มหาวิทยาลัยเกษตรศาสตร์.
Creek, M. J. and B. L. Nestel. (1964). Animal Production studies in Jamaica, 3: The effect of dam age upon the 210 day weights of calves and response of male and female calves to different environments. J. Agric. Sci. 62: 165.
Neville, W. E. Jr. (1970). Influence of dam's milk production and other factors on 120 and 240 day weight of Hereford calves. J. Anim. Sci. 21: 315
Preston, T. R. and M. B. Willis. (1970) Intensive Beef Production. Pergamon Press. Page 234-236
Smith, G. M. and H. A. Fitzhugh, Jr. (1968). Homogeniety of relationshiqes between dam and progeny weights. J. Anim. Sci. 27: 1129 (Abstr).
Singh, A. R, R. R. Schalls, W. H. Smith and F. B.Kessler. (1970). Cow weight and preweaning performance of calves J. Anim. Sci. 31: 27
Statistical Analysis System. (1985) SAS/STAT Guide for Personal Computers. SAS Institute Inc., Cary, N.C. U.S.A Version 6 Edition, Page 183-260.
Walker, C. A. (1964). The growth and development of the beef qualities of Angoni cattle (East African Shorthom Zebu), 1: Live weight. J. Agric. Sci 63: 135
