Impact of pig insemination technique and semen preparation on profitability1

Autor:	Robert V. Knox, J. E. Pettigrew, Sandra L. Rodriguez-Zas, Dianelys González-Peña
Rok vydání:	2014
Předmět:	Intrauterine insemination BOAR Artificial insemination medicine.medical_treatment Semen General Medicine Biology Insemination Crossbreed Andrology Animal science Fresh semen Genetics medicine Animal Science and Zoology Food Science
Zdroj:	Journal of Animal Science. 92:72-84
ISSN:	1525-3163 0021-8812
DOI:	10.2527/jas.2013-6836
Popis:	Artificial insemination technique and semen preparation impact boar utilization efficiency, genetic dissemination, and biosecurity. Intrauterine (IUI) and deep intrauterine (DUI) AI techniques require lower number of spermatozoa per dose compared to conven- tional (CON) AI. Frozen semen (FRO) has been associ- ated with lower reproductive performance compared to fresh semen (FRE) preparation. The combined effects of 3 AI techniques (CON, IUI, and DUI) and 2 semen prepa- rations (FRE and FRO) on the financial indicators of a pig crossbreeding system were studied. A 3-tier system was simulated in ZPLAN and the genetic improvement in a representative scenario was characterized. The cross of nucleus lines B and A generated 200,000 BA sows at the multiplier level. The BA sows were inseminated (CON, IUI, or DUI) with FRE or FRO from line C boars at the commercial level. Semen preparation and AI technique were represented by distinct sow:boar ratios in the C × BA cross. A range of farrowing rates (60 to 90%) and litter sizes (8 to 14 liveborn pigs) were tested. Genetic improve- ment per year for number born alive, adjusted 21-d litter weight, days to 113.5 kg, backfat, and ADG were 0.01 pigs per litter, 0.06 kg, -0.09 d, -0.29 mm, and 0.88 g, respectively. On average, the net profit for FRE (FRO) increased (P-value < 0.0001) from CON to IUI and DUI by 2.2 (3.2%) and 2.6% (4%), respectively. The differenc- es in profit between techniques were driven by differences in costs. Differences in fixed costs between IUI and DUI relative to CON were -2.4 (-5.2%) and -3.4% (-7.4%), respectively. The differences in total costs between FRE and FRO were lower than -5%. The difference in variable costs between FRE and FRO ranged from -5.3 (CON) to -24.7% (DUI). Overall, insemination technique and semen preparation had a nonlinear effect on profit. The average relative difference in profit between FRE and FRO was less than 3% for the scenarios studied.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::b1d2e96c8fadaddad3bbbd41b9e49733 https://doi.org/10.2527/jas.2013-6836 Zobrazit plný text záznamu