Effects of production and marketing circumstances on economic values for beef production traits

Koots, K. R.; Gibson, J. Phil

doi:10.4141/a97-039

Cited by 21 publications

(22 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In the literature, simulation models have been used to predict feed intake and cow performance on the basis of availability and quality of grass and other supplements; and to optimize insemination and culling policies (Hirooka et al. 1998; Koots & Gibson 1998; Vargas et al. 2002).…”

Section: Methodsmentioning

confidence: 99%

“…The model was able to predict feed intake and evaluate profitability of the different production systems utilizing the Boran breed. In the literature, simulation models have been used to predict feed intake and cow performance on the basis of availability and quality of grass and other supplements; and to optimize insemination and culling policies (Hirooka et al 1998;Koots & Gibson 1998;Vargas et al 2002). However, use of such models can become difficult when there is insufficient knowledge of the production system under analysis (Groen et al 1997), as is the case in Kenya.…”

Section: General Model Descriptionmentioning

confidence: 99%

See 1 more Smart Citation

Economic values for production and functional traits and assessment of their influence on genetic improvement in the Boran cattle in Kenya

Rewe

Indetie²,

Ojango

et al. 2006

J Animal Breeding Genetics

View full text Add to dashboard Cite

Economic values for production (sale weight in steers, SWs, kg and heifers, SWh, kg; dressing percentage, DP; consumable meat percentage, CMP and milk yield, MY, kg) and functional (cow weight, CoWT, kg; cow survival rate, CoSR, %; postweaning survival rate, PSR, %; feed intake of cows, FIc, heifers, FIh and steers, FIs, kg DM) traits were estimated for six production systems utilizing the Boran breed in Kenya. The influence of the estimated economic values on genetic improvement was also assessed using different selection indices. The six production systems were described according to their sale age, levels of input and final goal, namely, short-fed medium input beef (SMB); long-fed medium input beef (LMB); short-fed high input beef (SHB); long-fed high input beef (LHB); long-fed low input dual purpose (LLD); and long-fed medium input dual purpose (LMD). Two evaluation bases were considered: fixed herd size and fixed pasture input. In the fixed herd-size situation, the economic values for production (except MY in beef systems) and functional traits (except FI in all systems) were positive meaning a unit increase in genetic merit of these traits had greater influence on revenues than costs. As expected, the economic value for MY was negative in the pure beef systems (SMB, LMB, SHB and LHB) and positive in the dual-purpose systems (LLD and LMD). When compared with the economic values estimated in the fixed herd-size situation, in the fixed pasture input situation they were lower for feed intake in the three classes of livestock and other traits related to it in all systems. These traits were CoSR, CoWR, PSR, CoWT, SWh and MY. The economic values for CoWT in LLD and LMD were negative (KSh -11.14 and -15.33 respectively). The economic values did not influence much the direction of the genetic response in each trait in the different production systems. However, the magnitude of the actual gain was dependent on the index applied. The magnitude of the economic values for production and functional traits estimated in this study suggest that genetic improvement of these traits will have a positive effect on profitability of Boran cows kept in dual-purpose systems and when herd size is restricted. In beef systems, genetic improvement of MY will have a negative effect on profitability, especially when restrictions on herd size and feed exists.

show abstract

Section: Methodsmentioning

confidence: 99%

Section: General Model Descriptionmentioning

confidence: 99%

Economic values for production and functional traits and assessment of their influence on genetic improvement in the Boran cattle in Kenya

Rewe

Indetie²,

Ojango

et al. 2006

J Animal Breeding Genetics

View full text Add to dashboard Cite

show abstract

“…Kosgey et al, 2003;Kahi and Nitter, 2004;Rewe et al, 2006). Elsewhere, different models have been used to predict feed intake based on a dynamic model of digestion (Vargas et al, 2002) and performance on the basis of availability and quality of grass and other supplements (Hirooka et al, 1998) and to optimize insemination and culling policies (Koots and Gibson, 1998;Vargas et al, 2002). Use of such models can be difficult when there is insufficient knowledge of the production system under analysis (Groen et al, 1997), as is the case for goat production systems in Kenya.…”

Section: Discussionmentioning

confidence: 99%

Breeding goals for the Kenya Dual Purpose goat. I. Model development and application to smallholder production systems

Bett

Kosgey

Bebe

et al. 2007

Trop Anim Health Prod

View full text Add to dashboard Cite

A deterministic model was developed and applied to evaluate biological and economic variables that characterize smallholder production systems utilizing the Kenya Dual Purpose goat (KDPG) in Kenya. The systems were defined as: smallholder low-potential (SLP), smallholder medium-potential (SMP) and smallholder high-potential (SHP). The model was able to predict revenues and costs to the system. Revenues were from sale of milk, surplus yearlings and cull-forage animals, while costs included those incurred for feeds, husbandry, marketing and fixed asset (fixed costs). Of the total outputs, revenue from meat and milk accounted for about 55% and 45%, respectively, in SMP and 39% and 61% in SHP. Total costs comprised mainly variable costs (98%), with husbandry costs being the highest in both SMP and SLP. The total profit per doe per year was KSh 315.48 in SMP, KSh -1352.75 in SLP and KSh -80.22 in SHP. Results suggest that the utilization of the KDPG goat in Kenya is more profitable in the smallholder medium-potential production system. The implication for the application of the model to smallholder production systems in Kenya is discussed.

show abstract

“…4). Nonetheless, seasonal effects have been ignored in similar studies elsewhere (Koots & Gibson 1998).…”

Section: Discussionmentioning

confidence: 99%

Breeding objectives for the Boran breed in Kenya: Model development and application to pasture‐based production systems

Rewe

Indetie²,

Ojango

et al. 2006

Animal Science Journal

View full text Add to dashboard Cite

Bio‐economic profit models were developed and applied to evaluate biological and economic variables that characterize production systems utilizing the Boran breed. Production systems were described according to their sale age (24 months short‐fed or 36 months long‐fed), levels of input (low, medium or high) and final goal (beef or dual purpose) representing practical circumstances that exist in the various beef cattle farms in Kenya. The input variables were classified into production and economic variables. The outputs from the profit models included revenue, costs and feed intake of cows, heifers and steers in the different production systems. These models can be used to simulate changes in production and marketing circumstances. The biological relationships and assumptions in the model are general and flexible and can therefore be applied to a wide range of beef cattle production circumstances by changing the input variables. In addition, by modifying the herd dynamics and management variables this model may be applied in Kenya or other countries to production systems that utilize indigenous cattle genetic resources or their crosses with Bos taurus breeds.

show abstract

Effects of production and marketing circumstances on economic values for beef production traits

Cited by 21 publications

References 23 publications

Economic values for production and functional traits and assessment of their influence on genetic improvement in the Boran cattle in Kenya

Economic values for production and functional traits and assessment of their influence on genetic improvement in the Boran cattle in Kenya

Breeding goals for the Kenya Dual Purpose goat. I. Model development and application to smallholder production systems

Breeding objectives for the Boran breed in Kenya: Model development and application to pasture‐based production systems

Contact Info

Product

Resources

About