Research and Technology Transfer to Integrated Reproductive Managements of Dairy Cows for Increasing Sustainable Production of Member of the Upper Northeast Dairy Co-operative
Abstract:
Slow recovery of reproductive competence associated with decline in fertility during post-partum period in dairy cows has been a major limitation to the success of reproductive management and has been a major impact on profitability of dairy co-operative members. Therefore, the objectives for this study to improvement reproductive performance in postpartum dairy cows infertility problems raised by the small holder farmers. Early postpartum buffalo cows were enrolled in 4 related experiments; Exp. I) Prepartum multiparous Holstein cows (n=60) were randomly allocated to receive dietary concentrate (control) plus one of two supplements (4 and 8% plant oil) 4-week prior to parturition. Following parturition, all cows were continually given the same dietary concentrate for 4 weeks. Uterine health and ovarian functions were greater in cows supplemented with both 4 and 8% plant oil. There also were effects of dietary supplements on the number of large follicles (P<0.05). The uterine involution and first estrus postpartum of supplemented cows was recovered sooner than those control cows (P<0.05). Exp. II) Dairy cows postpartum (n= 80) separate experiments, four groups of cows were fed concentrate, 16% protein (T1) has been added, it hay, 1 kg., per day (T2) was added, acacia leaves. 1 kg dry. against per day (T3) and dairy cattle, it has been reinforced, leucaena hay 0.5 and 0.5 kg of cassava hay, per day (T4). The study found that supplementing it, cassava hay or Leucaena hay and cassava hay + leucaena hay were greater milk production greater than the control group (P <0.05. In addition, the uterine involution in treatment groups were greater (33-37 days postpartum) than the control group (> 47 days postpartum, P<0.05). Moreover, the first estrous after parturition in the control group (54.89 day postpartum) were longer than the treatment groups (40-46 days postpartum, P <0.05). Exp. III) Nonpregnant dairy cows (n=80) were randomly assigned to each of 4 treatments to receive artificial insemination (AI). Dairy cows assigned to 4 treatments: Doublesynch, Ovsynch, Ovsynch+CIDR, and CIDR+PGF+E2. The first conception rate were greater (P<0.05) in Doublesynch (76%), Ovsynch+CIDR (60%), and CIDR+PGF+E2 (68%) than Ovsynch (44%) groups. Exp. IV) Evaluation of the participants in this training the farmers to the extent that more than 40% of the most useful is the ability to bring practical. Addition, for this training, the confidence that can bring practical experience to the farm is absolutely up to 62.30% and increase average revenue 1,001-2,000 baht per month. Moreover, the implementation of the training to receive training in various fields. Overall is satisfactory (grade 4) up to 44.26% followed by 37.70%, and a good level of guest satisfaction overall is in very good (level 5) up to 42.62%. Several observations in this research project have substantially contributed to integrated understanding of our research team and related researchers leading to the best practices to resolve infertility problems in postpartum dairy cows and therefore the sustainable dairy production.